-tad

Mane (Îngilîzî)

forms nouns representing the property corresponding to an adjective; -ity

Hevwate

-ia

Werger

-heit

-keit

-nis

-y

-é

-à

-ia

-tas

-ium

-heid

-nis

-idade

-ia

Etîmolojî (Îngilîzî)

Ji Old Spanish mîras hatiye girtin: -tat

Ji latînî mîras hatiye girtin: -tās

In summary

Inherited from Old Spanish -tat, from Latin -tās, from Proto-Indo-European *-teh₂ts.